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Electronic Metal Mount TTL Auto Focus AF Macro Extension Tube Ring for Canon EF/EF-S

Electronic Metal Mount TTL Auto Focus AF Macro Extension Tube Ring for Canon EF/EF-S

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Features:
Support accurate TTL & Autofocus.
Built-in electric pins and drives.
Compatibility: for all EF and EF-S Canon lenses.
Combined with 3 tubes in different length: 13mm, 21mm, 31mm; totally 7 different combinations.
Made of copper and lead (not plastic) that is more strong.
Upgraded circuitry to work better with digital SLRs cameras and SLR lenses.
Superior lock pin which can tighten the tube joint.
Perfect for macro shooting.
High quality and compact.

Specifications:
Material: Copper, Lead, PC
Color: Black
Macro tube size: 6.2 * 8cm / 2.4 * 3.1in(D * H)
Macro tube weight: 241g / 8.5oz
Package size: 13 * 7 * 7cm / 5.1 * 2.8 * 2.8in
Package weight: 279g / 9.8oz

Auto Extension Tube Distance Reading of Master Lens Image Magnification Ratio

Field Coverage(cm)

Distance From Lens Front to Subject(cm) Exposure Factor
13mm Inf. 0.24 10 * 15 21 1.5
0.5m 0.35 6.9 * 10.3 16 1.8
21mm Inf. 0.40 6 * 9 13 2.0
0.5m 0.51 4.7 * 7.0 14 2.3
31mm Inf. 0.72 3.3 * 5.0 7.7 3.0
0.5m 0.83 2.9 * 4.4 7.0 3.4
13+21mm Inf. 0.64 3.8 * 5.6 8.5 2.7
0.5m 0.75 3.2 * 4.8 7.5 3.1
13+31mm Inf. 0.96 2.5 * 3.7 6.0 3.9
0.5m 1.07 2.3 * 3.4 5.5 4.3
21+31mm Inf. 1.12 2.2 * 3.3 5.3 4.5
0.5m 1.23 2 * 3 4.9 5.0
13+21+31mm Inf. 1.34 1.8 * 2.7 4.5 5.6
0.5m 1.47 1.6 * 2.4 4.2 6.1

Package list:
1 * Metal Macro Extension Tube Set
1 * Bag
1 * User Manual

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  • By j***n

    April 15, 2015

    ok

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  • By l***i

    January 19, 2015

    Excellent service!

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